Yukon Gear 4340 Chromoly Cut-To-Fit Rear Axle Shaft – GM 14-Bolt 10.5" & 11.5" (30 Spline)
YA WGM14T-30-42
When you are fabricating a custom rig, standard axle lengths rarely cut it. The Yukon Gear & Axle 4340 Chromoly Cut-to-Fit Rear Axle gives you the ultimate flexibility to dial in your custom track width without sacrificing strength. Built specifically for GM 10.5" 14-bolt and 11.5" rear ends, this 30-spline shaft is engineered to take serious abuse on the trail, the rocks, or the street.
Forged from high-tensile 4340 chromoly, this axle provides a massive strength upgrade over standard stock shafts while keeping your build budget in check. Featuring cold-roll formed splines and advanced induction coil heat treating, it delivers unmatched durability. Whether you are narrowing a housing for a rock bouncer or setting up a custom overlander, its 38.2-inch to 42.2-inch cut-to-length design ensures you get the exact fit required for your fabrication project.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Yukon Gear & Axle |
| Part Number | YA WGM14T-30-42 |
| Material | 4340 Chromoly |
| Spline Count | 30-Spline |
| Length Range | 38.2" to 42.2" (Cut-to-Fit) |
| Flange Bolt Pattern | 3.562" |
| Shipping Weight | 24.3 lbs |
Fitment
| Axle Type | Position |
|---|---|
| GM 10.5" (14-Bolt) & 2001-2010 GM 11.5" | Rear |
Fitment Notes
- Please verify your specific flange bolt pattern on 2011 and later GM models.
- This specific axle features a 3.562" bolt pattern. Some late-model GM applications utilize a larger bolt pattern that will not line up with this shaft.
FAQ
1. How do I properly cut this axle to my required length?
You can cut the axle to length using a standard abrasive chop saw or a high-quality horizontal band saw. After cutting, it is highly recommended to chamfer or bevel the freshly cut edge to allow for easy installation into the carrier or locker splines.
2. Will this fit my 2012+ GM 11.5" rear axle?
You must manually verify your bolt pattern first. This axle features a 3.562" bolt pattern, which is standard for 2001-2010 models. Some 2011 and newer GM trucks moved to a larger bolt pattern on the axle flange, which will not line up with this shaft.
3. Why should I upgrade to 4340 Chromoly over a stock axle replacement?
4340 Chromoly has a significantly higher tensile strength than standard OEM carbon steel axles. This means it can withstand the increased torsional loads created by running larger tires, deeper gear ratios, and heavy-duty off-road abuse without snapping.
4. Will cutting the axle to length ruin the heat treatment?
No. Yukon cuts the splines long enough so that when you trim the shaft within the advertised 38.2" to 42.2" window, you are cutting through properly splined and induction heat-treated material. Just avoid getting the metal excessively hot if using an abrasive wheel.
5. Are the splines cut or rolled into the shaft?
Yukon uses cold roll formed splines on these shafts rather than traditional machine-cut splines. Rolling the splines compacts the metal grain structure, resulting in a much stronger spline profile that resists twisting and shearing under heavy loads.